XSS in Microsoft Lync Server
CVE-2019-0798
A spoofing vulnerability exists when a Lync Server or Skype for Business Server does not properly sanitize a specially crafted request, aka 'Skype for Business and Lync Spoofing Vulnerability'.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.021 (81.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.021 · change: -0.011
Affected products
- Microsoft Lync Server — versions 2013
- Microsoft Lync Server 2013 — versions July 2018 Update
- Microsoft Skype For Business Server — versions 2015
- Microsoft Skype For Business Server 2015 — versions March 2019 Update
Weakness classification (CWE)
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0798 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-0798?
- CVE-2019-0798 is a medium-severity vulnerability in Microsoft Lync Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-04-09.
- How severe is CVE-2019-0798?
- Medium severity. CVSS v3 base score is 6.1 out of 10.